Upcoming 100 Milers

Endurance Grid lists fifty 100 milers across the US, from October 2026 to October 2027 across 23 states.

50
Races
23
States

What a 100 Mile is

A 100-mile race is a running race where athletes run 100 miles long (160.9 kilometers) for time.

100 milers are busiest in December and May, with the most in Texas, California, North Carolina, and Ohio.

Frequently Asked Questions

How many 100 Mile running races are there in the US?
Endurance Grid's Race Calendar lists 50 upcoming 100 Mile running races across 23 states.
How far is a 100 Mile running?
A 100-mile race is a running race where athletes run 100 miles long (160.9 kilometers) for time.
Which states have the most 100 Mile running races?
The states with the most 100 Mile running races on Endurance Grid's Race Calendar are Texas, California, North Carolina, Ohio, Florida, and New Jersey.